the crust is the thinnest layer on Earth, which allowed it to have a more constant theory of its composition. how do you think s
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Considering the definition of pressure, force will have the same units of pressure is multiplied by area.
<h3>What is pressure</h3>Pressure is defined as the force exerted per unit area.
In this way, for the same force, the pressure is inversely proportional to the surface: this means that, for the same force, the smaller the surface, the greater the pressure exerted and the more the body will be deformed.
That is, pressure is defined as the force exerted perpendicularly on a surface and is expressed mathematically as:
In the International System of Units, the unit of pressure is the pascal (Pa). One pascal is the pressure exerted by a force of 1 N distributed over an area of 1 m².
Then, the definition of force can be expressed as:
Force= Pressure× Area
<h3>Summary</h3>In summary, force will have the same units of pressure is multiplied by area.
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A radar receiver indicates that a pulse return as an echo in 20 μs after it was sent. The reflecting object would be 3000 m away .
Phenomenon of hearing back our own sound is called an echo. It is due to successive reflection of sound waves from the surfaces or obstacles of large size. To hear an echo, there must be a time gap of 0.1 second in original sound and the reflected sound.
Given
time = 20 μs = 20 * s
let distance to the reflecting surface be = x
total distance travelled by pulse will be = 2x
speed = 3.0 × m/s
distance = speed * time
2x = 3.0 × * 20 *
x = 3000 m
The reflecting object would be 3000 m away
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